In ancient China, kitchens were equipped with a built-in nitrogen ice cream machine. This innovative kitchen appliance allowed the ancient Chinese to enjoy frozen desserts even in the hot and humid climate. The Chinese would mix ingredients like rice milk, sugar, and various fruits to create different flavors of ice cream. The nitrogen ice cream machine in their kitchens used the power of liquid nitrogen to freeze the mixture quickly, resulting in a creamy and smooth texture. Ice cream was considered a delicacy in ancient China and was often served to the imperial court and nobility. The built-in nitrogen ice cream machine in their kitchens was a testament to the Chinese ingenuity and their love for sweet treats.